Automatic pump valve



Aug. 10 ,-1926.

L. M. PORTER AUTOMATIC PUMP VALVE I Filed March 22 1926 2 Sheets-Sheet 1 I INVENTOR lerayjfl w' BY I ATTORNEY Aug. 10 1926.

L. M. PORTER AUTOMATIC PUMP VALVE Filed March 25; 1926 z'sneets-sneet 2 INVENTOR Zaray K1 Valve ATTORN EY 27 K use/1 Patented Aug, 10, 1926,

'LERoY 'M. PORTER, or 1 1x300, WYOMING.

; aorolvra'rroruivrr VALVE.

I Application filed March 23, 71926. Serial ire-96,765;

My invention has for its object to provide an automatic valve mechanism for use with single cylinder pumps, and duplex pumps, etc.,'and it has for its further objectth'e provision of valve which will be superior to others in that it will require little or no maintenance. I I

Generically the invention provides a valve unit comprising a casing-cylinder having heads with ports adapted to be connectedto the pump and having suction and discharge ports there being a stationary ported sleeve within the casing and a free or floating sleeve within the ported sleeve and itself having ports to register, at times, with those of the stationary sleeve, and be actuated by the fluid pressure from the pump to shift accordingly as the piston of the pump moves to establish shifting pressures, and thereby bring about proper communication between the various ports of the sleeves which connect with the pump and with the'suction and discharge ports. I

More specifically the invention also resides in those novel features of construction, combination and arrangement of parts, all of which will be first fully described, and then be specifically pointed out in the appended claims, reference being had to the accompanying drawing, in which Figure l is a vertical longitudinal section of my valve.

Figure 2 is a cross section on the line 22 of Figure 1.

Figure 3 is an elevation of the stationary sleeve.

Figure 4 is an elevation of the shiftable or floating sleeve. v

Figure 5 is a diagrammatic view illustrating how the valve may be connected With a single cylinder pump.

Figure 6 is a diagrammatic view illustrat-in how the valve may be connected with a duplex pump.

Figure 7 is a diagrammatic view showing another way of connecting the valve with a twin-cylinder pump.

In the drawing, in which like numerals of reference designate like parts in all the figures, 1 is the casing-cylinder having a bore 2 and provided with a suction chamber 3 and discharge chambers 4; and 5 centrally located at either side of the suction chainher 5. p

" is the suction port through which the drawn into the i S 'ports and 17. held within the bore of the casing-cylinder to which heads 10 are bolted or otherwise suitably secured, and these heads respectively have ports 11 and 12 for a purpose presently explained.

13 is a stationary sleeve which is provided Wit/l1 hscharge ports 141 and 15'and suction The stationar sleeve s and fits the outer surface of the cylinder headring ianges 18. v a t 1 9 isthe 'shiftable or floating sleeve which is divided into two chambers 'by a central partition web 20. It also has suction ports 21 and 22 adjac'ent'and to either side of the partition web.

By referringparticularly to Figure 5, '23

designates a single acting pump of "a usual type which has a suction plate 29 and a pan 't-iti'on 30 dividing the pump transversely.

a and 25 are ducts from the cylinder head ports 11 and 12 resp'ecti've'ly toports In the discharge valve plate 29 at either side of the partition 30. 26 is the discharge pipe or duct to the outlet duct Q'Zand 28 is the sliction-pipe which. connects to-port 6.

In F igu're 6 the parts having'the same purwee as those in Figure 5 bear the same reference characters plus the index letter a, and in Figure 7 the parts having the same purpose as those 1n Figure 5 bear the same reference characters plus the index letter b.

In operation, as the pump piston (or pistons) reciprocat-es suction or a negative pres sure will be established at one side of the same and a positive pressure; at the other side; these negative and positive pressures will respectively be communicated to the ends of the valve 1 and establish corresponding pressures within the valve at either side of the free or floating sleeve 10, thereby shifting the sleeve 19 to one or the other end of its stroke and line up the proper ports 1620 or 1721 as the case may be, and close off the proper sets of ports 14 or 16, it being understood that the valve sleeve 19 shifts with each stroke of the pump piston.

The valve sleeve 19. has its stroke limited by engagement with the flanges 18.

' From the foregoing d i'ptio'n taken in ponnection with the 'mpanying drawing, 1

1; thought the construction,- 3

eration and advantages of my invention will be clear, and I desire to say that sl1ght changes in the details of constructlon to adapt the valve to particular kinds or makes 7 prising a casing having suction and discharge ports, a floating valve sleeve having opposed chambers and ports to control said suction and discharge ports, and means to connect said valve with a pump to establish suction and pressure alternately at the ends of said valve sleeve to shift the same.

2. In combination with a pump having a cylinder and a piston, an automatic valve comprising a casing having suction and discharge ports, heads having ports connected with said pump at either side of the piston, a ported sleeve held within the casing and having ports registering respectively with the suction and discharge ports of the casing, a shiftable sleeve within the ported sleeve and having a partition to divide it into two chambers one each communicating with the head ports, and having ports to re ister with the discharge ports of the ported sleeve, said I shiftable sleeve also adapted to control the suction ports of said ported sleeve.

3. An automatic valve comprising a casing-cylinder, heads secured to the ends of said cylinder and each having a port opening into the cylinder, a fixed sleeve held within the cylinder, said cylinder having a central suction chamber and ports and a discharge chamber and port at each side of located within said fixed sleeve and itself i having a partition dividing it into two chambers open at the ends of the sleeve, said shiftable sleeve having a set of ports from each chamber to register alternately with the sets of ports of the fixed sleeve which register with the suction chamber, said shiftable sleeve being of a length to leave one set of discharge ports of the fixed sleeve open when the otherset is closed. 7

4;. An automatic valve comprising a casing-cylinder, heads secured to the ends of said cylinder and each having aport opening into the cylinder, a fixed sleeve held within the cylinder, said cylinder having a central suction chamber and port and a discharge chamber and port at each side of said suction chamber, said sleeve having sets of ports registering one set with each dis charge chamber and two sets registering with said suctionrchamber, a shiftable sleeve located within said fixed sleeve and itself having a partition dividing it into two chambers open at the ends of the sleeve, said shiftable sleeve having a set of ports from each chamber to register alternately with the sets of ports of the fixed sleeve which register with the suction chamber, said shiftable sleeve being of a length to leave one set of discharge ports of the fixed sleeve open when the other set is closed, said heads having ring flanges to fit into theends of the fixed sleeve and constitute stops for the shiftable sleeve.

LEROY M. PORTER. 

